Vaginal syringe



R. l. BOND ET .f4.5-

VAGINAL SYRINGE )Feb 26, 1924.

Filed Oct. l5. 1921 Patented Feb. 26, i924.

tienen ROBERT I. BUND AND FRANCIS W'. JOHNSTONE, OF FOR-T SMITH, ARKANSAS.

VAGINAL SYRINGE.

Application filed october 15, 192i. vserial No. 507,842.

To all whom t may concern:

Be it known that we, ROBERT I. BOND and FRANCIS W. JoHNsToNE, bothof Fort Smith, in the county of Sebastian and State of Arkansas, have jointly invented a certain new and useful Improvement in Vaginal Syringes, of which improvement the following is a specification.

Our invention relates to syringes for the 'fully set forth.

In the accompanying drawings: Figure l is a longitudinal central section through a syringe, illustrating an embodiment of our invention, and; Figs. 2, 3 and 4, transverse sections, Fig. 3 being on an enlarged scale, on the lines a a, 7) b, and 0 c, respectively, of Fig. 1. In the practice of our invention, referring descriptively `to the specific embodiment thereof which is herein exemplied, we provide a primary bulb, l, which performs the function of a reservoir for medicated solution, and -a smaller secondary bulb, 2, of elastic material, as rubber, which actsl as an ejector of the solution.' vEach of said bulbs is fixed on a Vcollar, 3a, formed on one of the sections 'of an outer tube, 3, which is made in two sections screwed together in line axially. An inner tube, 4, which is also made in two sections connected in line axially, is fitted within the outer tube, 3, and is held in position therein by set screws, 4a, the inner tube being of smaller diameter than the bore of the outer tube so as to provide a space, of annular transverse section, between the two tubes.

The outer and inner tubes are both closed at their ends adjoining the primary bulb, 1, by a removable tap screw plug, 5, and the opposite end of the outer tube is connected, by a fiexible tube, 6, to an outer liquid return flow pipe, 7 having a Haring nozzle, 7a, at its outer end, and an elliptical fiange, 7b, to which is connected a facing, 7c, of rubber sponge or analogous yielding materia-l, adjacent to its end which is connected to the flexible tube, 6. rlhe inner tube, 4, is connected, by a fiexible tube, 8, to an inner delivery pipe, 9, which terminates adjacent to the nozzle, 7, of the outer pipe, 7. The diameters of the inner delivery pipe, 9, and flexible tube, 8, are less than those of the bores of the outer pipe, 7,

land fieXible tube, 6, thereby presenting a continuous space, of annular transverse section, between the outer and inner pipes and tubes.`

Communication between the two sections of the inner tube, 4, is normally closed by a valve, 10, located at their junction which valve is held to its seat by a spring, 11, the tension of which is sufficient to keep the valve seated against the weight of liquid bearing on it, but not sufficient to do so when pressure acting to unseat it is opposed by a vacuum, or partial vacuum, in the secondary bulb, 2. Communication between the opposite end of this section of the inner tube, that is to say, the end at which it is connected to the flexible tube, 8, kand said tube, 8, is normally closed by a valve, 12'held to its seat by a spring, 13, the tension` of 'which is not sufficient to resist pressure applied to it by manual compression of the elastic secondary bulb, 2.

Constantly open communication is maintained betweenr the primary bulb, l, and

,this space betweenh the inner and the outer tubes, at the end thereof adjoining the tap screw plug, 5, through one or more perforations, 3b, in the outer tube, and between said bulb, l, and the inner tube, 4, through one or more perforations, 3C, in the outer tube, and communicating perforations, 4b, in the inner tube. Similarly, constantly open communication is maintained between the secondary bulb, 2, and the inner tube, 4, through one or more perforations, 3d, in the outer tube, and communicating perforations, 4d, in the inner tube, the latter having a small fiange around the perforation, 4, as shown in Fig. 4, which closes off the annular space between the inner and outer tubes rom the passage formed by said perforations, 3d and 4d, so that there is no communication between the secondary bulb, 2, and said space.

In the operation of the appliance, which we terni a. vacuum douche, it is filled with the proper medicated solution by being held in a vertical position with the tap screw plug, 5, removed while the liquid is supplied. The liquid enters the primary bulb, 1, from the inner tube, 4:, through the perorations, a" and 3c, the air escaping, through the pertorations, 3b, into and out of the outer tube, 8. The nozzle, 7a, having been properly inserted in the Vpassage Vthrough which treatment is to be applied,

the secondary bulb, 2, is compressed by the patient, the air which it contains, escaping by -unseating the valve, 12. Upon the release oi' the` bulb, 2, a partial vacuum is formed therein by its expansion, and the valve, l2, is seated by atmospheric pressure. The valve, l0, is then unseated by the preponderance of pressure in the primary bulb, l; the liquid flows therefrom into the secondary bulb, 2; and a partial vacuum is formed in the primary bulb. The bulb, 2, is then again compressed, and the. liquidv is forced out ,of it, unseating the valve, 12, and passing out through the inner delivery pipe, 9, to the parts upon which its cleansing action is to be exerted, immediatelyreturning, through the space between the pipes, 7 and 9, to till the vacuum in the primary bulb, l. This opei'ation can be kept up aslong as desired, without loss ot the medicated solution or inconvenience to the patient.

The same eiiect would obviously be accomplished, in a similar' manner by locating the pipes, 7 and 9, side by side, instead ot' one within the other as shown, but the latter location is preferable by reason of economy of space and convenience in handling.

A substantial advantage of the appliance is presented in its capacity of operation constantly under a vacuum, thereby ensuring i the immediate return of the medicated solution to a reservoir in which it stands ready for repeated use by the alternate compression and release of the secondary bulb. A further advantage consists in the fact that there is but slight liability to loss of solution after each operation.

lVe claim as our invention and desire to secure by Letters Patent:

l. In a syringe, the combination of a liquid reservoir; an ejector; a valve controlled passage, communicating with the reservoir and the ejector; a valve controlled delivery pipe, leading from the'ejector; a liquid return flow pipe, leadingV from the delivery pipe to the reservoir, and passino' through said ejector without communicating-'there with, and a check valve between said reservoir and said ejector. i

2. In a syringe, the combination oi a primary bulb; a secondary bulb; an outer tube, on which said bulbs are fixed and with which the primary bulb is in open communication; an inner tube, spacedapart from said outer tube,and in open communication Awith the primary and seconda-ry bulbs; a

spring pressed valve, controlling communication through the inner tube; a delivery pipe, connected to the inner tube; a spring pressed valve, controlling communication through said pipe; and a'return flowV pipe, open to the discharge end of the delivery pipe, and leading therefrom to said outer tube. Y

' 3. In a syringe, the combination of a tube, a liquid reservoir on one-end thereof and a nozzle on the other end, an elastic bulb' on said tube, and a delivery pipe within said tube and in 4communication with said reservoir and said bulb, whereby liquid is forced out of said reseryoir by the compression of said bulb and is drawn back into said reseryoir through s aid tube.

4C. in a. syringe, the combination of a return tube, a` liquid reservoir on one end thereof and communicating therewith, an elastic bulb on said tube but not communi- `eating therewith, a delivery tube' within said Witnesses:

' OVA STUART,

C. R. WARNER. 

